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bug#12464: 24.2.50; nt/configure.bat fails to detect giflib-5.0.0
From: |
Eli Zaretskii |
Subject: |
bug#12464: 24.2.50; nt/configure.bat fails to detect giflib-5.0.0 |
Date: |
Tue, 18 Sep 2012 13:04:10 +0300 |
> Date: Tue, 18 Sep 2012 18:13:45 +0900
> From: Kazuhiro Ito <kzhr@d1.dion.ne.jp>
>
> Because gif_lib.h of giflib-5.0.0 assumes size_t is defined (I don't
> know whether that is intended), nt/configure.bat fails to check its
> availability.
>
> In nt/config.log
> > In file included from junk.c:1:0:
> > f:/build/emacs-w32/include/gif_lib.h:262:37: error: expected ';', ',' or
> > ')' before 'GifExtensionLength'
> > f:/build/emacs-w32/include/gif_lib.h:265:8: error: expected '=', ',', ';',
> > 'asm' or '__attribute__' before 'EGifGCBToExtension'
> > The failed program was:
> > #include "gif_lib.h"
> > main (){}
> > gcc -If:/build/emacs-w32/include -If:/build/emacs-w32/include/libxml2 -g
> > -c junk.c -o junk.obj
> > gcc -If:/build/emacs-w32/include -If:/build/emacs-w32/include/libxml2 -g
> > -c junk.c -o junk.obj
>
> Though I don't know whether Emacs supports giflib-5.0.0, the below
> patch can fix the problem. Gif support on my binaries (built by gcc
> 4.5.2, MinGW) has no problem with giflib-5.0.0 as far as I tested.
>
> === modified file 'nt/configure.bat'
> --- nt/configure.bat 2012-09-08 11:20:32 +0000
> +++ nt/configure.bat 2012-09-18 03:14:43 +0000
> @@ -627,7 +627,8 @@
> if (%gifsupport%) == (N) goto gifDone
>
> echo Checking for libgif...
> -echo #include "gif_lib.h" >junk.c
> +echo #include "stdio.h" >junk.c
> +echo #include "gif_lib.h" >>junk.c
> echo main (){} >>junk.c
> rem -o option is ignored with cl, but allows result to be consistent.
> echo %COMPILER% %usercflags% %mingwflag% -c junk.c -o junk.obj >>config.log
Does it work to use stddef.h instead of stdio.h? stddef.h is where
size_t is normally defined.